Quantum backflow for many-particle systems
arXiv:2005.14685 · doi:10.1103/PhysRevA.102.023334
Abstract
Quantum backflow is the classically-forbidden effect pertaining to the fact that a particle with a positive momentum may exhibit a negative probability current at some space-time point. We investigate how this peculiar phenomenon extends to many-particle systems. We give a general formulation of quantum backflow for systems formed of free nonrelativistic structureless particles, either identical or distinguishable. Restricting our attention to bosonic systems where the identical bosons are in the same one-particle state allows us in particular to analytically show that the maximum achievable amount of quantum backflow in this case becomes arbitrarily small for large values of .
12 pages, 2 figures
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Cited by in corpus (11)
- Demonstrating backflow in classical two beams' interference
- Quantum backflow in a ring
- Angular momentum quantum backflow in the noncommutative plane
- Experiment-friendly formulation of quantum backflow
- On the experiment-friendly formulation of quantum backflow
- Time-of-arrival distributions for continuous quantum systems and application to quantum backflow
- Different routes to the classical limit of backflow
- Quantum backflow for dissipative two-identical-particle systems
- Quantum backflow current in a ring: Optimal bounds and fractality
- Quantum backflow for two identical particles
- Preparing Quantum Backflow States by Large Momentum Transfer